Red Hat Product Errata RHSA-2026:23230 - Security Advisory Issued: 2026-06-04 Updated: 2026-06-04 RHSA-2026:23230 - Security Advisory Overview Updated Packages Synopsis Important: expat security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for expat is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description Expat is a C library for parsing XML documents. Security Fix(es): libexpat: denial of service via crafted XML input (CVE-2026-45186) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products Red Hat Enterprise Linux for x86_64 9 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 x86_64 Red Hat Enterprise Linux for IBM z Systems 9 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 s390x Red Hat Enterprise Linux for Power, little endian 9 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 ppc64le Red Hat Enterprise Linux for ARM 64 9 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.8 aarch64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.8 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.8 x86_64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.8 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.8 s390x Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.8 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.8 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.8 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.8 s390x Fixes BZ - 2468575 - CVE-2026-45186 libexpat: denial of service via crafted XML input CVEs CVE-2026-45186 References https://access.redhat.com/security/updates/classification/#important Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux for x86_64 9 SRPM expat-2.5.0-6.el9_8.1.src.rpm SHA-256: 3ef9a4df767dbc5e75944b5c197d186f8b5ca8745522e07cdf1a195229d381b4 x86_64 expat-2.5.0-6.el9_8.1.i686.rpm SHA-256: 6b62dc49dce619dfbab4a2ba16081c10093d9c6cac1e12051657e683ab73d885 expat-2.5.0-6.el9_8.1.x86_64.rpm SHA-256: 6a0c98d67b643fe620297e4cd7e990f99a86ed6bc90a8295a952c626ecbb9f62 expat-debuginfo-2.5.0-6.el9_8.1.i686.rpm SHA-256: 6ba34d3ba27e4c472f1c9424f35a15150cf1fd9fd3fb459d2529e4181cc1f51d expat-debuginfo-2.5.0-6.el9_8.1.i686.rpm SHA-256: 6ba34d3ba27e4c472f1c9424f35a15150cf1fd9fd3fb459d2529e4181cc1f51d expat-debuginfo-2.5.0-6.el9_8.1.x86_64.rpm SHA-256: 971dfbb6282411758dc6591bb4c5266a4547d3a0888e9469a86582c9275dcde8 expat-debuginfo-2.5.0-6.el9_8.1.x86_64.rpm SHA-256: 971dfbb6282411758dc6591bb4c5266a4547d3a0888e9469a86582c9275dcde8 expat-debugsource-2.5.0-6.el9_8.1.i686.rpm SHA-256: 52ca60c078f4c519d922bc674d6b0ea72f2aa325cebbe284431b633fddd7c729 expat-debugsource-2.5.0-6.el9_8.1.i686.rpm SHA-256: 52ca60c078f4c519d922bc674d6b0ea72f2aa325cebbe284431b633fddd7c729 expat-debugsource-2.5.0-6.el9_8.1.x86_64.rpm SHA-256: 65950f317eb3ec607c417a5eef35df29027f394f1d0113f6bc0057d693daf7be expat-debugsource-2.5.0-6.el9_8.1.x86_64.rpm SHA-256: 65950f317eb3ec607c417a5eef35df29027f394f1d0113f6bc0057d693daf7be expat-devel-2.5.0-6.el9_8.1.i686.rpm SHA-256: 5ec578126ababf1195bf483816fc5d33f44aa5700f0c551d6cb5cde09c270788 expat-devel-2.5.0-6.el9_8.1.x86_64.rpm SHA-256: 290bde0a0231096f102bed32331f35e4858e5f8db6964538bc2c835337c9a9f9 Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 SRPM expat-2.5.0-6.el9_8.1.src.rpm SHA-256: 3ef9a4df767dbc5e75944b5c197d186f8b5ca8745522e07cdf1a195229d381b4 x86_64 expat-2.5.0-6.el9_8.1.i686.rpm SHA-256: 6b62dc49dce619dfbab4a2ba16081c10093d9c6cac1e12051657e683ab73d885 expat-2.5.0-6.el9_8.1.x86_64.rpm SHA-256: 6a0c98d67b643fe620297e4cd7e990f99a86ed6bc90a8295a952c626ecbb9f62 expat-debuginfo-2.5.0-6.el9_8.1.i686.rpm SHA-256: 6ba34d3ba27e4c472f1c9424f35a15150cf1fd9fd3fb459d2529e4181cc1f51d expat-debuginfo-2.5.0-6.el9_8.1.i686.rpm SHA-256: 6ba34d3ba27e4c472f1c9424f35a15150cf1fd9fd3fb459d2529e4181cc1f51d expat-debuginfo-2.5.0-6.el9_8.1.x86_64.rpm SHA-256: 971dfbb6282411758dc6591bb4c5266a4547d3a0888e9469a86582c9275dcde8 expat-debuginfo-2.5.0-6.el9_8.1.x86_64.rpm SHA-256: 971dfbb6282411758dc6591bb4c5266a4547d3a0888e9469a86582c9275dcde8 expat-debugsource-2.5.0-6.el9_8.1.i686.rpm SHA-256: 52ca60c078f4c519d922bc674d6b0ea72f2aa325cebbe284431b633fddd7c729 expat-debugsource-2.5.0-6.el9_8.1.i686.rpm SHA-256: 52ca60c078f4c519d922bc674d6b0ea72f2aa325cebbe284431b633fddd7c729 expat-debugsource-2.5.0-6.el9_8.1.x86_64.rpm SHA-256: 65950f317eb3ec607c417a5eef35df29027f394f1d0113f6bc0057d693daf7be expat-debugsource-2.5.0-6.el9_8.1.x86_64.rpm SHA-256: 65950f317eb3ec607c417a5eef35df29027f394f1d0113f6bc0057d693daf7be expat-devel-2.5.0-6.el9_8.1.i686.rpm SHA-256: 5ec578126ababf1195bf483816fc5d33f44aa5700f0c551d6cb5cde09c270788 expat-devel-2.5.0-6.el9_8.1.x86_64.rpm SHA-256: 290bde0a0231096f102bed32331f35e4858e5f8db6964538bc2c835337c9a9f9 Red Hat Enterprise Linux for IBM z Systems 9 SRPM expat-2.5.0-6.el9_8.1.src.rpm SHA-256: 3ef9a4df767dbc5e75944b5c197d186f8b5ca8745522e07cdf1a195229d381b4 s390x expat-2.5.0-6.el9_8.1.s390x.rpm SHA-256: a5b24ad347a1722a948f417a7289a89b1aee9047350e88866173e05157239142 expat-debuginfo-2.5.0-6.el9_8.1.s390x.rpm SHA-256: bbcef4f7edcc3b68416a40e205f054121949be8399b5a9441a5c4ac8161da91a expat-debuginfo-2.5.0-6.el9_8.1.s390x.rpm SHA-256: bbcef4f7edcc3b68416a40e205f054121949be8399b5a9441a5c4ac8161da91a expat-debugsource-2.5.0-6.el9_8.1.s390x.rpm SHA-256: fa1f3abf415dbc980b7acc5ec0402e88f4c2e8078622c6666ec72057c8b2ae40 expat-debugsource-2.5.0-6.el9_8.1.s390x.rpm SHA-256: fa1f3abf415dbc980b7acc5ec0402e88f4c2e8078622c6666ec72057c8b2ae40 expat-devel-2.5.0-6.el9_8.1.s390x.rpm SHA-256: d9cd02df93102abbfb9efea30f5037a1b7312211cbb5fac1a1b97162f520d545 Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 SRPM expat-2.5.0-6.el9_8.1.src.rpm SHA-256: 3ef9a4df767dbc5e75944b5c197d186f8b5ca8745522e07cdf1a195229d381b4 s390x expat-2.5.0-6.el9_8.1.s390x.rpm SHA-256: a5b24ad347a1722a948f417a7289a89b1aee9047350e88866173e05157239142 expat-debuginfo-2.5.0-6.el9_8.1.s390x.rpm SHA-256: bbcef4f7edcc3b68416a40e205f054121949be8399b5a9441a5c4ac8161da91a expat-debuginfo-2.5.0-6.el9_8.1.s390x.rpm SHA-256: bbcef4f7edcc3b68416a40e205f054121949be8399b5a9441a5c4ac8161da91a expat-debugsource-2.5.0-6.el9_8.1.s390x.rpm SHA-256: fa1f3abf415dbc980b7acc5ec0402e88f4c2e8078622c6666ec72057c8b2ae40 expat-debugsource-2.5.0-6.el9_8.1.s390x.rpm SHA-256: fa1f3abf415dbc980b7acc5ec0402e88f4c2e8078622c6666ec72057c8b2ae40 expat-devel-2.5.0-6.el9_8.1.s390x.rpm SHA-256: d9cd02df93102abbfb9efea30f5037a1b7312211cbb5fac1a1b97162f520d545 Red Hat Enterprise Linux for Power, little endian 9 SRPM expat-2.5.0-6.el9_8.1.src.rpm SHA-256: 3ef9a4df767dbc5e75944b5c197d186f8b5ca8745522e07cdf1a195229d381b4 ppc64le expat-2.5.0-6.el9_8.1.ppc64le.rpm SHA-256: eae0d2c0c23adc9b878e86d46a7cd176e991a84fc5780877dd58f15552b6a5c6 expat-debuginfo-2.5.0-6.el9_8.1.ppc64le.rpm SHA-256: 9e72e9c494d99d7126bc40c76c5acf2c0323cc26124c79877a3aab86dbf92f74 expat-debuginfo-2.5.0-6.el9_8.1.ppc64le.rpm SHA-256: 9e72e9c494d99d7126bc40c76c5acf2c0323cc26124c79877a3aab86dbf92f74 expat-debugsource-2.5.0-6.el9_8.1.ppc64le.rpm SHA-256: 49bded207caf795a835490f7c115f4e0406f5f7ad3318717833b356417310aaf expat-debugsource-2.5.0-6.el9_8.1.ppc64le.rpm SHA-256: 49bded207caf795a835490f7c115f4e0406f5f7ad3318717833b356417310aaf expat-devel-2.5.0-6.el9_8.1.ppc64le.rpm SHA-256: 0b3716b62925cd4d55062521be5bc66d7366d2ad4ec4e3cc451c11a1eaf776fa Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 SRPM expat-2.5.0-6.el9_8.1.src.rpm SHA-256: 3ef9a4df767dbc5e75944b5c197d186f8b5ca8745522e07cdf1a195229d381b4 ppc64le expat-2.5.0-6.el9_8.1.ppc64le.rpm SHA-256: eae0d2c0c23adc9b878e86d46a7cd176e991a84fc5780877dd58f15552b6a5c6 expat-debuginfo-2.5.0-6.el9_8.1.ppc64le.rpm SHA-256: 9e72e9c494d99d7126bc40c76c5acf2c0323cc26124c79877a3aab86dbf92f74 expat-debuginfo-2.5.0-6.el9_8.1.ppc64le.rpm SHA-256: 9e72e9c494d99d7126bc40c76c5acf2c0323cc26124c79877a3aab86dbf92f74 expat-debugsource-2.5.0-6.el9_8.1.ppc64le.rpm SHA-256: 49bded207caf795a835490f7c115f4e0406f5f7ad3318717833b356417310aaf expat-debugsource-2.5.0-6.el9_8.1.ppc64le.rpm SHA-256: 49bded207caf795a835490f7c115f4e0406f5f7ad3318717833b356417310aaf expat-devel-2.5.0-6.el9_8.1.ppc64le.rpm SHA-256: 0b3716b62925cd4d55062521be5bc66d7366d2ad4ec4e3cc451c11a1eaf776fa Red Hat Enterprise Linux for ARM 64 9 SRPM expat-2.5.0-6.el9_8.1.src.rpm SHA-256: 3ef9a4df767dbc5e75944b5c197d186f8b5ca8745522e07cdf1a195229d381b4 aarch64 expat-2.5.0-6.el9_8.1.aarch64.rpm SHA-256: 7cc4e533f63bdec0ead003d176cb262b8d4d2583dfd57b2e9cfeeed4ead13475 expat-debuginfo-2.5.0-6.el9_8.1.aarch64.rpm SHA-256: 7376d37dd242fa606e22c390b40ed9ff1c60a6e9d65ba42fee724399346e26df expat-debuginfo-2.5.0-6.el9_8.1.aarch64.rpm SHA-256: 7376d37dd242fa606e22c390b40ed9ff1c60a6e9d65ba42fee724399346e26df expat-debugsource-2.5.0-6.el9_8.1.aarch64.rpm SHA-256: eb13f6a98c4eccb2ac360016e475cdc4a06c5dea16ec85455675798499a93e37 expat-debugsource-2.5.0-6.el9_8.1.aarch64.rpm SHA-256: eb13f6a98c4eccb2ac360016e475cdc4a06c5dea16ec85455675798499a93e37 expat-devel-2.5.0-6.el9_8.1.aarch64.rpm SHA-256: e2d0fe93d6d1fc9fc